The Spring Equinox today



The Spring Equinox is the fourth solar term of the 24 solar terms. "the Spring Equinox is half yin and yang. 
Therefore, both day and night are cold and heat flat. 
A "fen" word tells the dividing line between day and night, cold and summer. 
At this time, the sun's yellow longitude is 0 degrees, and the sun's position is above the equator. 
According to the almanac, "Dou Zhi ren is the Spring Equinox, about Zhou Tian, day and night equalization between the northern and southern hemispheres, and when the half of spring, so it is called the Spring Equinox." 
The Spring Equinox usually refers to the time when the solar longitude is at 0 °, around the 15th day of the second month of the lunar calendar (about March 19-22 in the Gregorian calendar). 
In the time period, it also refers to the position of the sun between 0 °and 15 °of the yellow longitude, that is, the period from the spring equinox to the Qingming Festival, while the Gregorian calendar [2] is about between March 20 and April 5. 
On the Spring Equinox's day, the sun shines directly on the earth's equator, with the opposite seasons in the northern and southern hemispheres. The Spring Equinox in the northern hemisphere and the Autumn Equinox in the southern hemisphere.